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Prenolepis jacobsoni
| Prenolepis jacobsoni | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Formicinae |
| Tribe: | Lasiini |
| Genus: | Prenolepis |
| Species: | P. jacobsoni |
| Binomial name | |
| Prenolepis jacobsoni Crawley, 1923
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Nothing is known about the biology of Prenolepis jacobsoni.
Identification
Williams and LaPolla (2016) - Small in overall size (TL: 2.42–2.64mm); obtusely angled propodeum with flat dorsal and posterior faces; petiole low in profile and elongate with a prominent anteroventral process.
This species has a narrow and elongate petiole (PetWI < 55) like Prenolepis darlena, Prenolepis fustinoda, Prenolepis jerdoni, and Prenolepis subopaca. In P. jacobsoni the petiole is distinct in that there is a prominent anteroventral process present and the scale has a unique shape. Prenolepis jacobsoni can also be distinguished by its smaller size, lighter color, and overall smooth cuticle.
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia (type locality).
Oriental Region: Thailand.
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Countries Occupied
| Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species. |
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Estimated Abundance
| Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species. |
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Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- jacobsoni. Prenolepis jacobsoni Crawley, 1923a: 30 (w.) INDONESIA (Sumatra).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Williams and LaPolla (2016) - (n=2): CMC: 10–14; EL: 0.21; EW: 0.17; HL: 0.61–0.66; HLA: 0.32– 0.34; HLP: 0.19; HW: 0.57–0.58; IOD: 0.44; LF1: 0.17; LF2: 0.11; LHT: 0.83–0.84; MMC: 2; MTW: 0.35–0.37; MW: 0.22; PDH: 0.26–0.27; PMC: 1–3; PrCL: 0.38–0.40; PrCW: 0.21; PrFL: 0.68–0.70; PrFW: 0.15–0.16; PTH: 0.21; PTL: 0.37–0.41; PTW: 0.19–0.22; PW: 0.43–0.44; SL: 0.86–0.92; TL: 2.42–2.64; WF1: 0.06; WF2: 0.05; WL: 0.88–0.89; BLI: 172–175; CI: 87–94; EPI: 172–175; FLI: 153; HTI: 145; PetHI: 79–81; PetWI: 53; PrCI: 52– 55; PrFI: 22; REL: 32–35; REL2: 37; REL3: 48–49; SI: 150–159.
Light to medium brown; cuticle of head, pronotum, mesopleuron, and gaster smooth and shiny; cuticle between metanotal spiracles rugoreticulate; very long, erect macrosetae on head and gaster; abundant decumbent setae on scapes and legs; sparse erect macrosetae on mesosoma; no erect macrosetae on the propodeum; head about as broad as long or slightly longer than broad and oval in shape with indistinct posterolateral corners and a convex posterior margin; compound eyes moderately large and convex, barely surpassing the lateral margins of the head in full-face view; torulae do not touch the posterior border of the clypeus; clypeus strongly medially convex and without prominent anterolateral lobes; mandibles with 6 teeth on the masticatory margin; ectal surface of mandibles smooth and shiny; in profile view, propodeum is obtusely angled with a flat dorsal face; petiole is narrow and elongate (PetWI < 55) with a prominent anteroventral process; scale of petiole is low in profile with a rounded dorsal apex of the scale.
Type Material
- Neotype (designated by Williams & LaPolla, 2016: 227), worker, West Sumatra, Maninjau, Indonesia, 07–09 August 1985, USNMENT00755101, National Museum of Natural History.
Taxonomic Notes
This species was described by Crawley (1923) from a single worker specimen, but the type material is missing. In the interest of nomenclatural stability a neotype from the original type locality was designated by Williams & LaPolla (2016).
References
- Crawley, W. C. 1923a. Myrmecological notes. Entomol. Rec. J. Var. 35: 29-32. (page 30, worker described)
- Khachonpisitsak, S., Yamane, S., Sriwichai, P., Jaitrong, W. 2020. An updated checklist of the ants of Thailand (Hymenoptera, Formicidae). ZooKeys 998, 1–182 (doi:10.3897/zookeys.998.54902).
- Williams, J. L. and J. S. LaPolla. 2016. Taxonomic revision and phylogeny of the ant genus Prenolepis (Hymenoptera: Formicidae). 4200(2):201–258. doi:10.11646/zootaxa.4200.2.1
- Williams, J.L. 2022. Description of Prenolepis rinpoche sp. nov. from Nepal, with discussion of Asian Prenolepis species biogeography. Asian Myrmecology 15, e015008 (doi:10.20362/am.015008).
References based on Global Ant Biodiversity Informatics
- Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
- Crawley W. C. 1923. Myrmecological notes. Entomologist's Record and Journal of Variation 35: 29-32.
- Crawley W.C. 1924. Ants from Sumatra, with biological notes by Edward Jacobson. Annals and Magazine of Natural History (9)13: 380-409
- Jaitrong W.; Nabhitabhata, J. 2005. A list of known ant species of Thailand. The Thailand Natural History Museum Journal 1(1): 9-54.
- Williams J. L., and J. S. LaPolla. 2016. Taxonomic revision and phylogeny of the ant genus Prenolepis (Hymenoptera: Formicidae). Zootaxa 4200: 201-258.